山岭隧道突水突泥地表沉陷综合处治技术探讨

The Discussion on the Comprehensive Treatment Technology of Water and Mud Bursting Surface Subsidence for Mountain Tunnel

以广西六寨至河池高速公路瑶寨隧道左线ZK47+067处突水突泥地表沉陷及处理为例,介绍了在砂性土质条件下隧道出现塌方、冒顶、突水突泥事故的主要处理措施,并结合工程地质实际对普遍采用的管棚法进行一定改进,使其在砂性土质条件下能够满足加固围岩的需要,最终保证顺利通过软弱松散塌体。

Combined with the settlement and treatment examples of the water and mud bursting surface subsidence in the construction,this paper introduced the main treatment measures of accidents under the sandy soil conditions,such as collapse,roof fall,water and mud bursting for tunnels.Combined with the engineering geological practice,the paper also made the improvement widely used pipe roof method to ensure the smooth through the loose collapse.